COOP COOP Mathematics Concepts

Question 1

What is the least common multiple (LCM) of 4 and 6?

Accepted Answer

12

Answer

The LCM of 4 and 6 is 12, the smallest number divisible by both.

Question 2

Which fraction is equivalent to 0.75?

Accepted Answer

3/4

Answer

0.75 equals 75/100, which simplifies to 3/4.

Question 3

A rectangle has a length of 9 cm and a width of 5 cm. What is its area?

Accepted Answer

45 cm²

Answer

Area of a rectangle = length × width = 9 × 5 = 45 cm².

Question 4

What is 15% of 80?

Accepted Answer

12

Answer

15% of 80 = 0.15 × 80 = 12.

Question 5

If a bag has 3 red marbles, 5 blue marbles, and 2 green marbles, what is the probability of picking a blue marble?

Accepted Answer

1/2

Answer

There are 5 blue marbles out of 10 total, so the probability is 5/10 = 1/2.

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